• Engine

    ModelKomatsu SAA6D140E-7
    TypeFour-cycle, water-cooled, direct injection
    AspirationTurbo-charged, after-cooled, cooled EGR
    Number of cylinders6
    Bore x stroke140 mm x 165 mm
    Displacement15.24 ltr
    Horsepower, Gross - SAE J1995353 kW / 473 HP
    Horsepower, Net - ISO 9249 / SAE J1349348 kW / 466 HP
    Rated RPM2000
    Fan drive methodHydraulic
    Emissions certificationEPA Tier 4 Final
  • Axles

    Final drive typePlanetary gear
  • Body

    Capacity, struck18.2 m3
    Capacity, heaped (2:1 SAE)24 m3
    Payload40000 kg
    Target area (inside length x width)5667 mm x 3194 mm
    HeatingExhaust heating (option)
    Material130 kg/mm2 high tensile strength steel
    Material thickness:
    Bottom16 mm
    Front8 mm
    Sides12 mm
  • Brakes

    Service brakesFull-hydraulic control, oil-cooled multiple-disc type on front and centre axles
    Parking brakeSpring applied, caliper disc type
    RetarderFront and centre axle brakes act as retarder
  • Cab

    Standard ISO3449 (FOPS) ISO3471 (ROPS)
  • Hydraulic System

    Hoist cylinderTwin, telescopic type
    Relief pressure 28.4 MPa 290 kg/cm2
    Hoist time12.0 sec
  • Main Frame

    Type Articulated, box-sectioned construction on front and rear Connected by strong torque tubes
  • Service Refill Capacities

    Fuel tank525 ltr
    DEF tank34.0 ltr
    Engine oil50 ltr
    Torque converter, transmission and retarder cooling125 ltr
    Differentials (total)108 ltr
    Final drives (total)32 ltr
    Hydraulic system167 ltr
    Suspension (total)21.4 ltr
  • Steering System

    TypeArticulated type, fully hydraulic power steering with two double-acting cylinders
    Supplementary steeringAutomatically actuated, electrically powered
    Standard ISO5010 SAE J1511
    Minimum turning radius, wall to wall8.8 m
    Articulation angle45° each direction
  • Suspension System

    FrontHydro-pneumatic suspension
    RearCombined hydro-pneumatic and rubber suspension system
  • Transmission

    Torque converter3-elements, 1-stage, 2-phase
    TransmissionFull-automatic, countershaft type
    Speed range6 speeds forward and 2 reverse
    Lockup clutchWet, single-disc clutch
    ForwardTorque converter drive in 1st gear, direct drive in 1st lockup and all higher gears
    ReverseTorque converter drive and direct drive in all gear
    Shift controlElectronic shift control with automatic clutch modulation in all gear
    Maximum travel speed55.9 km/h
  • Tyres

    Standard tyre29.5 R25
  • Weight (Approximate)

    Empty and Gross Weight:

    Empty weight 35005 kg
    Gross vehicle weight 75135 kg



    Weight Distribution:

    Front axle 56.9%
    Centre axle 23.6%
    Rear axle 19.5%
    Front axle 30.4%
    Centre axle 35.8%
    Rear axle 33.8%

HM400-5 Dump Trucks

The HM400-5 is a 40-tonne capacity truck, powered by a new technology Komatsu engine and featuring our advanced truck transmission system, along with exclusive hydraulic braking and retarder systems for unrivalled traction, braking power and safety in all applications. As with all our trucks, key components are designed and manufactured by Komatsu to work together in an integrated package. And it comes standard with our Komtrax remote monitoring and location system, backed by our Australia-wide service and support network.

Tier 4 Engine KDPF Regeneration 
  • 348 kW / 466 HP
  • 75,135 kg
  • 40,000 kg

Current Offers

Komatsu Traction Control System

Komatsu Traction Control System (KTCS) automatically engages the inter axle lock and the KTCS braking to provide optimal traction in soft ground conditions

Selectable Economy and Power Working Modes

Selectable working modes for Economy and Power allows machine performance to be optimised based on demand and operating conditions

Auto Idle Shutdown

In order to reduce unwanted idle time, Komatsu machines feature Komatsu Auto Idle Shutdown. This function will shut the engine off and apply the parking brake and hydraulic lock after a preset idle time limit

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